83643433434638 has 16 divisors (see below), whose sum is σ = 156424083306624. Its totient is φ = 32588350688760.

The previous prime is 83643433434619. The next prime is 83643433434643.

83643433434638 is nontrivially palindromic in base 10.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 271569588920 + ... + 271569589227.

It is an arithmetic number, because the mean of its divisors is an integer number (9776505206664).

Almost surely, 2^{83643433434638} is an apocalyptic number.

83643433434638 is a deficient number, since it is larger than the sum of its proper divisors (72780649871986).

83643433434638 is a wasteful number, since it uses less digits than its factorization.

83643433434638 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 543139178167.

The product of its digits is 429981696, while the sum is 62.

The spelling of 83643433434638 in words is "eighty-three trillion, six hundred forty-three billion, four hundred thirty-three million, four hundred thirty-four thousand, six hundred thirty-eight".